Implement operator registry system with configurable runtime and codegen classes #4
      
        
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This PR implements a flexible operator registry system that allows users to create custom operator sets for different use cases. The new system provides:
New Classes
OperatorRegistryA class to manage collections of operators with methods to:
ExpressionRuntimeA runtime class that evaluates JSON expressions using a specified operator registry:
ExpressionCodegenA code generation class that compiles expressions to JavaScript using custom operator sets:
Built-in Registries
Default Registry
Contains the most commonly used operators for typical JSON expression needs:
+,-,*,/, etc.)==,>,<, etc.)and,or,not)type,bool?,str?, etc.)len,member)cat,contains,starts)concat,filter,map)keys,values,entries)if,throw)get,$)Extended Registry
Includes everything from the default registry plus advanced operators:
u8,i8,f32, etc.)&,|,^,~)jp.add)Usage Examples
Backward Compatibility
All existing APIs remain unchanged. The original
evaluatefunction andJsonExpressionCodegenclass continue to work exactly as before, using the full operator set by default.Fixes #3.
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